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25 New Frederick Mews London Southwark SE17 3FX

25/AP/3249Local Authority DevelopmentApproved

Approved on 21 January 2026

Council decision: Council's Own - GRANTEDDelegated (officer decision)

Site boundary (council red line)

Proposal

Provision of an external air source heat pump and acoustic enclosure unit, a row of three security bollards alongside the north elevation glazing and ventilation cowls on the roof including the relocation of existing cycle stands.

Received
7 November 2025
Decision level
Delegated (officer decision)
Ward
Newington
Agent
Landolt + Brown Ltd
  1. Received7 Nov
  2. Validated10 Dec
  3. Consult.10 Jan
  4. Target3 Feb
  5. Decided21 Jan

Decided in 42 days (council typically 49)

About this application

This is a planning application for window replacement at 25 New Frederick Mews London Southwark SE17 3FX. Southwark has handled 9 applications of this type. This one was decided in 75 days, 4 weeks longer than Southwark's typical decision time. The site is in 1 listed building nearby. There are no previous applications recorded at this address. In the past year there have been 29 applications across Newington. We hold 400 applications in total for the SE17 postcode area.

94% of all applications at London Borough of Southwark were approved. Across all application types, the council typically decides in about 7 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Postcode
SE17 3FX
Application type
Local Authority Development
Scale / size
Small
Parish
Borough, Bankside And Walworth

Planning application dates

Date validated
10 December 2025
Last date for comments
10 January 2026
Target decision date
3 February 2026
Permission expires
21 January 2029

Applicant and agent

Agent
Landolt + Brown Ltd
Agent address
501 Cocoa Studios The Biscuit Factory Drummond Road London SE16 4DG United Kingdom

Planning decision

Statutory period
55 days

Additional information

Comments
0
Documents
27

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 3: High probability (rivers and sea)
  • Brownfield land register: Braganza Street Workshop42,Braganza Street,Land Adjacent To 26 Braganza Street,SE17 3RJRegister site at or near this address
Also checked, none recorded (23)

flood storage areas, conservation areas, listed buildings, Article 4 directions, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves and heritage coasts.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Southwark

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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